Iris and Ariel are 17-year-old twins, who live with their mother and older sister in an old house in the middle of a rocky island covered with molluscs and birds. The teenagers have grown up isolated from the mainland, in a sibling relationship that surpasses the limits of normal intimacy. The abrupt absence of their mother deeply wounds the three siblings, and Iris, moved by a strong need of separating herself from her brother, decides to go alone to the city for the first time.

At a pivotal moment in her singing career, Rocío discovers that her mother is ill and that her final wish is to meet with her again before she dies. After evading the past for 10 years, Rocío returns to her hometown from where she was once expelled. When confronting her family, she comes to understand that forgiveness is the key that will allow her to realize her full potential.

David dreams of being a pianist like his father, José Luis, who believes it impossible due to his son's physical characteristics: short arms, hands with four fingers and limited hearing. Thanks to his tenacity, David shows him that he can play in his own way and together they begin a musical path that culminates with a new challenge for David: premiering the difficult concerto for piano and orchestra that his father composed for him.